update icon: packer (original, original-wordmark, plain, plain-wordmark, line, line-wordmark)

[canaleal]

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• PR does not match another non-stale PR currently opened
• PR name matches the format new icon: Icon name (versions separated by comma). More details here
• PR's base is the develop branch.
• Your icons are inside a folder as seen here
• SVG matches the standards laid out here
• A new object is added in the devicon.json file as seen here

This PR is related to #1998

Link to prove your SVG is correct and up-to-date.

• Packer website
• Packer SVG Brandkit from previous PR

Used the color #1d94dd for the font SVGs.

[Snailedlt]

Great work once again! 💯
The only thing I can think of is that the line-wordmark version's smallest text is a bit hard to read since the line is too thick, so it overlaps on some points.

However if we make the line thinner then the rest of the icon becomes harder to read. One solution would be to only change the line thickness on the smallest text. Feel free to experiment with it if you want :)

Previews:

[lunatic-fox]

Everything seems to be fine now! 👍🏼
Thank you for this contribution! 🚀